Nonpreheating oil burner



Filed Sept. 23, '1920 C HESKETT NONPREHEATING OIL BURNER iatented ipr. il?, i923.

NONPREHEANG QXL BURNER.

Application. led

Be it known [that l, Cirrus lilnsirn'rr., a citizen ot the llnited States, residing at lndianapelis, in the county oi lilla ion and lState of Indiana, have invented new and useful improvements in )lonpi'eheating @il lurners, ont which the following is a .specii tication. l

This invention relates to improvements in oil burners wherein the hydrocarbon vapors are generated without preheating the oil and are i'ed through the mine1 and discharged under a aressure of air that simulates the action and effect oi' a blow-torch. The object of the invention is to produce a concentrated intense heat which is easily. and quickly started and easily controlled7 and which is applicable to heating rivets for structural iron and steel work, and for melting Babbitt metal, brass and' other metals, and to a variety oi work.

l' accomplish the object-s of the invention by the mechanism illustrated in the accompanying drawing, in which- Fig, l, is a side elevation and partial section of my invention and appurtenances. Fig. 2 is a section oi the generator and mixer on a large scale and Fig. 3, is a section oi the oil supply pipe showing the strainer.

Like characters oiz reference indicate like parts in the several views of the drawing.

A body-member a, here shown as ot cast brass and approximately three inches long7 has a longitudinal central bore 5, one vfourth inch in diameter extending two thirds of its length and thence to the end reduced to tive thirtv seconds ci an inch. into the threaded end of bore a pipe 6 is screwed and the pipe communicates with the top or air-end oi combined air and oil tank 7. rlie tank is only partially filled with a Jruel-oil and the air above it is maintained under pressure by any suitable means so that both the oil and air from the tank are supplied under pressure.

rl`he body 4C has a diagonal branch 8, through which is a one fourth inch bore 9y which communicates with bore 5 near where the latter is reduced as shown in Fig. 2.

The outer end oi the bore 9 is threaded and into it a plug l0, is screwed. ifi longitudinal central bore one sixty-fourth of an inch in diameter extends longitudinally through plug l0, anden a projecting threaded end of the plug a pipe 1l is screwed. This pipe is con- Serial No. 412,233.

tinued to the top oi the tank 7 and passes through the top and is continued down nearly to the bottom oi' the tank to keep the air i'rom entering it at `various levels at which the eil will stand under use. :l strainer l2 is assembled in the pipe ll., and a control ot the flow oi oil through the pipe is secured by the `globe valve i3 and a needle valve 14, the latter being located. within convenient reach ci an operator standing by the body il. A similar needle valve l5 is placed in the pipe 6, also within convenient reach of the operator.

A lire-pot formed ot a sheetmetal housing 16, supported on suitable legs i?, and lined with fire-brick 18, is here shown in one einhodiment of my invention lor heating rivets and by the placing of a Crucible within the lire-pot metals of various kinds may be melted. ln the form shown, a bracket 19 extends from the housing l to the body i? as a support for the latter. lt also supports a pipe 20 which is two inches in diameter in the form shown. This pipe is held at the proper distance from the adjacent end oi' body land in axial alinement therewith to form a mixer for the admission or atmospheric air to complete the combustion. of the mixture which passes into the .Fire-box through pipe 20 through the housing 1G and lining 1S, as shown, and the mixture is lighted within the lire-box.

A portable torch may be made by supporting the pipe 2O from body fl and making the pipes 6 and il flexible.

ln the operation of my device compressed airfrom tank 7 is discharged through the reduced opening in the head a, carrying with it a .fine stream or spray of oil supplied i'rom the tank through pipe ll and reduced by passing` through the small opening oi plug ll acting as a nozzle. rlie chambers and 9 are preliminary mixing chambers so that the mixture oi air and oil issues in al nebulized form from the reduced bore oi' body e, and passes through the pipe 20, drawing with it atmospheric air in requisite quantity to support complete combustion of the mixture discharged from pipe 20 into the nrebox.

l do not desire to limit my invention to the dimensions given nor to the specilic details described, but what l do claim as new and wish to secure by Letters Patentn isl. ln an oil burner. a body-member having a gas passage the cross-sectional area oi the major portion oil which is more than twice that of its discharge end, a branch member from the body having a bore of approximately the saine diameter as the major portion of the bore of the body-member and opening into said major bore near its reduced portion? a round plug in the outer end of the bore of the branch member-'haring a `bore of less cross-sectional area than that 0i the reduced portion olf the body member, means -for supplyil'ig air under pressure to the bore of' the body member and oil un- .der pressure to the bore ot the branch7 and a tube separated from the body member by an air-space through Which the mixture issuing from the body-member is discharged. y

2. In an oil burner, a member having a passage connected with a compressed air supply discharging through an opening of less cross-sectional area than that of the airy supplyconnection and having a. branch passage connected with an oil supply under pressure, said lbranch having an oil passage smaller than that through said discharge end, needle Valves in said air and oil connections, and a pipe Witha bore larger than any of the passages of saidmember through which the mixture issuing from the member discharges, said pipe being separated from said discharging member by an air space.

Signed at Indianapolis, Indiana, this the 11th day oit September 1920.

CHRIS HESKETT. 

